datime.datime.isocalendar()日历日期处理
1、IsoCalendarDate数组格式年、周、日排序
weekstr ='20251213-20251219'_week = datetime.datetime.strptime(weekstr.split('-')[-1],'%Y%m%d').isocalendar()print(f'_week:{_week}')_week:datetime.IsoCalendarDate(year=2025, week=51, weekday=5)
2、提取第xxxx年,第xx周,周用两位数字标识
weeknum =f'{_week[0]}{_week[1]:02d}'
print(f'weeknum:{weeknum}')
weeknum:202551